.video .video_fl{
  overflow: hidden;
  padding: 20px;
  box-sizing: border-box;
  background-color: #fff;
  box-shadow: 0 6px 12px rgb(0 0 0 / 10%);
}
.video .video_fl img{
  width: 100%;
  height: 100%;
}
.video_fr .right {
  margin-left: 35px;
  padding-top: 70px;
  float: right;
}
.video_fr .right p {
  font-size: 22px;
  color: #333;
  line-height: 30px;
  font-family: PingFangSC-Semibold, PingFang SC;
}
.video_fr .right ul {
  margin-top: 20px;
}
.video_fr .right ul li {
  font-size: 14px;
  color: #333;
  line-height: 20px;
  margin-bottom: 10px;
}
.video_fr .right ul li span {
  color: #f66;
  margin-right: 5px;
}
.video_fr .right ul .price {
  margin-top: 83px;
  vertical-align: top;
}
.video_fr .right ul .price span {
  font-size: 36px;
  line-height: 50px;
  color: #80C4AE;
}
.video_fr .right ul .price .freeStudy {
  border: 2px solid #80C4AE;
  margin-left: 31px;
  border-radius: 4px;
  font-size: 14px;
  display: inline-block;
  width: 117px;
  height: 48px;
  padding-left: 33px;
  box-sizing: border-box;
}
.video_fr .right ul .sale {
  width: 260px;
  height: 48px;
  padding-top: 13px;
  padding-left: 15px;
  background: #80C4AE;
  font-family: PingFangSC-Semibold, PingFang SC;
  border-radius: 4px;
  box-sizing: border-box;
}
.video_fr .right ul .sale span:nth-child(1) {
  border-right: 1px solid #fff;
  padding-right: 25px;
  margin-right: 25px;
}
.video_fr .right ul .sale span {
  color: #fff;
}
.list_item .start {
  width: auto;
  height: 30px;
  line-height: 30px;
  color: #74C6B3;
  border: 2px solid #74C6B3;
  border-radius: 4px;
  padding: 0px 22px;
  display: none;
  margin-top: 7.5px;
  box-sizing: border-box;
}
.courseVideo .courseVideo_list .list_item li a div:last-of-type {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #666666;
  letter-spacing: 0;
}
body {
  background-color: #FAFAFA;
}

/* 右侧视频播放菜单 */
.video .video_fl {
  width: 860px;
  height: 484px;
}

.video .video_fr {
  width: 320px;
  height: 484px;
  padding: 0 0 0 15px;
  box-sizing: border-box;
  /* overflow-y:auto;
  overflow-x: hidden; */
}

.video .video_fr .video_fr_top {
  width: 288px;
  height: 60px;
  margin-left: 10px;
  padding-top: 25px;
  box-sizing: border-box;
  border-bottom: 1px solid rgba(0, 0, 0, 0.10);
}

.video .video_fr .video_fr_top .catalogue,
.video .video_fr .video_fr_top .discuss {
  width: 80px;
  height: 35px;
  font-family: PingFangSC-Medium;
  font-size: 14px;
  color: #333;
  text-align: center;
  line-height: 35px;
  float: left;
  border-radius: 4px;
}

/* .video .video_fr .video_fr_top .catalogue:hover,
.video .video_fr .video_fr_top .discuss:hover {
  color: #fff;
  background: #80C4AE;
  border-radius: 4px;
  cursor: pointer;
} */

.video_fr .video_fr_ul {
  width: 320px;
  height: 424px;
  overflow-y: scroll;
  overflow-x: hidden;
}

.video .video_fr .video_fr_bot {
  overflow: hidden;
  width: 303px;
}

.video .video_fr .video_fr_bot h2 {
  font-family: PingFangSC-Medium;
  font-size: 16px;
  color: #333333;
  letter-spacing: 0;
  height: 40px;
  line-height: 40px;
  padding-left: 20px;
  box-sizing: border-box;
  margin-top: 10px;
}

.video .video_fr .video_fr_bot .video_fr_ul_item li {
  height: 40px;
  line-height: 40px;
  position: relative;
}

.video .video_fr .video_fr_bot .video_fr_ul_item li a {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #333333;
  letter-spacing: 0;
  display: block;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: 0 50px 0 25px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.video .video_fr .video_fr_bot .video_fr_ul_item li a:hover {
  background: #80C4AE63;
  color: #80C4AE;
}

.video .video_fr .video_fr_bot .video_fr_ul_item li a i {
  color: #80c4ae;
  font-size: 18px;
  right: 20px;
  position: absolute;
}

.discuss_list textarea {
  width: 303px;
  height: 100px;
  margin-top: 20px;
  resize: none;
  outline: none;
  border: 1px solid #ccc;
  border-radius: 5px;
  padding: 5px;
  box-sizing: border-box;
}

.discuss_list button {
  width: 60px;
  height: 35px;
  color: #fff;
  border: none;
  background-color: #74C6B3;
  border-radius: 5px;
  letter-spacing: 3px;
  text-indent: 3px;
  cursor: pointer;
}

.discuss_list .list {
  width: 305px;
  overflow: hidden;
}

.discuss_list .list ul {
  height: 265px;
  overflow-y: scroll;
  width: 325px;
}

.discuss_list .list li {
  border-bottom: 2px solid #E9E9E9;
  padding: 20px 0;
}

.discuss_list .list .item {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  color: #747474;
  margin-bottom: 10px;
  padding-right: 10px;
}

.discuss_list .list .lf {
  display: flex;
  flex-direction: row;
  align-items: center;
}

.discuss_list .list .lf img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  margin-right: 10px;
}

.discuss_list .list p {
  color: #9B9B9B;
}

/* 右侧视频播放菜单end */

/* 授课师资 */
.teacher {
  margin: 20px 0;
}

.teacher h2 {
  font-family: PingFangSC-Regular;
  font-size: 20px;
  color: #333333;
  letter-spacing: 0;
  padding: 20px;
}

.teacher .teacher_describe {
  height: 156px;
  box-shadow: 0 6px 12px 0 rgba(0, 0, 0, 0.09);
  border-radius: 4px;
}

.teacher .teacherIntroduce {
  height: 62px;
}

.teacher .introduce_fl {
  width: 265px;
  position: relative;

}

.teacher .introduce_fl .img {
  width: 62px;
  height: 62px;
  background-color: #d8d8d8;
  border-radius: 50%;
  overflow: hidden;
  margin-left: 30px;
}

.teacher .introduce_fl .img img {
  display: block;
  width: 62px;
  height: 62px;
}

.teacher .introduce_fl .name {
  padding: 0 20px;
  font-family: PingFangSC-Medium;
  letter-spacing: 0;
  color: #333333;
}

.teacher .introduce_fl i {
  display: block;
  width: 1px;
  height: 48px;
  background: #80C4AE;
  border-radius: 2.5px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: 0;
}

.teacher .introduce_fl .name h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.teacher .introduce_fl .name p {
  font-size: 16px;
}

.teacher .introduce_fr {
  width: 914px;
  padding: 0 30px;
  box-sizing: border-box;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #333333;
  letter-spacing: 0;
}

/* 授课师资end */

/* 下方课程视频 */
.courseVideo .courseVideo_top {
  background: #FFFFFF;
  box-shadow: 0 6px 12px 0 rgba(0, 0, 0, 0.09);
  height: 66px;
  line-height: 66px;
}

.courseVideo .catalogueDetails {
  width: 180px;
  margin: 0 auto;
}

.courseVideo .courseVideo_top .courseCatalogue,
.courseVideo .courseVideo_top .courseDetails {
  width: 80px;
  height: 66px;
  font-family: PingFangSC-Semibold;
  font-size: 14px;
  color: #333333;
  letter-spacing: 0;
  float: left;
  text-align: center;
}

.courseVideo .catalogueDetails .courseCatalogue {
  margin-right: 20px;
}

/* .courseVideo .catalogueDetails div:hover {
  background: #80C4AE;
  color: #FFFFFF;
  cursor: pointer;
} */

.courseVideo .courseVideo_list {
  background: #FFFFFF;
  box-shadow: 0 6px 12px 0 rgba(0, 0, 0, 0.09);
  padding: 20px 40px 8px;
  box-sizing: border-box;
}

.courseVideo .courseVideo_list .list_ul {
  /* height: 1020px; */
  overflow: hidden;
}

.courseVideo .courseVideo_list li h2 {
  font-family: PingFangSC-Medium;
  font-size: 16px;
  color: #333333;
  letter-spacing: 0;
  height: 50px;
  line-height: 50px;
}

.courseVideo .courseVideo_list li h2 i {
  float: right;
}

.courseVideo .courseVideo_list .list_item {
  display: none;
}

.courseVideo .courseVideo_list .list_item li a {
  display: block;
  width: 100%;
  height: 45px;
  line-height: 45px;
}

.courseVideo .courseVideo_list .list_item li a div:first-child {
  color: #80C4AE;
  margin-right: 15px;
  font-size: 23px;
}

.courseVideo .courseVideo_list .list_item li a div:nth-child(2) {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #333333;
  letter-spacing: 0;
  width: 245px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.courseVideo .courseVideo_list .list_item li a div:nth-child(3) {
  /* background: #80C4AE; */
  border-radius: 4px;
  font-family: PingFangSC-Medium;
  font-size: 12px;
  color: #333;
  text-align: center;
  padding: 0 5px;
  height: 25px;
  line-height: 25px;
  margin: 8px 0 0 50px;
}

.courseVideo .courseVideo_list .list_item li a div:last-child {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #666666;
  letter-spacing: 0;
}

.courseVideo .courseVideo_list .list_item li:hover div:nth-child(2n+2) {
  color: #80C4AE;
}

/* 下方课程视频 end*/

/* 点击展开查看全部 */
.courseVideo .unfold {
  height: 160px;
  background: #FAFAFA;
  font-family: PingFangSC-Semibold;
  font-size: 22px;
  letter-spacing: 0;
  text-align: center;
  line-height: 160px;
}

.courseVideo .unfold a {
  color: #74C6B3;
  text-decoration: underline;
}

/* 点击展开查看全部 end*/